Item – Check Valves Check Valve, Flow Design Single, Mechanism and Body Design Inline Wafer, Body Material – Valves CPVC, Pipe or Tube Size 4 in, Connection Type Flange x Flange, Cracking Pressure 1 psi, Mounting Orientation Horizontal, Vertical, Seal Material EPDM, Max. Temp. – Valves 190 Degrees F, Min. Temp. – Valves 40 Degrees F, Max. Water Pressure – Valves 150 psi @ 70 Degrees F, Max. Steam Pressure – Valves Not Rated, Seat Material EPDM, Flow – Valves 315 gpm, Full Flow – Valves Yes